The siren series In-ear monitors are named after famous rock songs about women.
Jerry Harvey Audio produced a special version of the Roxanne tuned for the Astell&Kern in 2014. The collaboration was so successful that the two companies will now release two more models.
The first new model is the Layla. This all new flagship model is nothing short of stunning visually as well as sonically....

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[I do not have trained ears, nor do I have a great setup. Hopefully I use the right words to describe the sound]
Even with the sibilance I love listening to them more than my SoundMagic E10 and my Alessandro MS2 (Grado 325is). The E10s are pretty good, but they somehow lack the fullness that makes listening satisfying. The XBF400Pro delivers just that. They produce rich and...” --drakool